waterbycounty
Federal water data

County water report

Camas County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Camas County, Idaho.

Water grade

F

Water score

13.4

State rank

#34

of 44

Health violations

1

EPA SDWIS, 5-year lookback

Watershed impaired

36.5%

353 water bodies assessed

Monitoring sites

31

5,148 recent measurements

Live streamflow

8%

CAMAS CREEK NR BLAINE ID

Water at a glance

Key Water Indicators for Camas County

EPA SDWIS

Safety Grade

F

Score: 13.4 / 100

EPA SDWIS

Active Violations

1

5-year health-based lookback

EPA ATTAINS

Watershed Health

37% impaired

353 bodies assessed

USGS NWIS

Streamflow Snapshot

8% of mean

CAMAS CREEK NR BLAINE ID

EPA WQP

Monitoring Sites

31

5,148 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

F

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

13.4/100

Health violations

1

Health-based violations

Violations per 100K served

226.8

Population-normalized SDWIS rate

Editorial analysis

Understanding Camas County’s Water

Drinking Water Quality Overview

EPA SDWIS

Camas County's water systems carry a failing grade, scoring 13.4 out of 100. Over the past five years, EPA SDWIS records 1 health-based violation — a single incident worth monitoring.

Watershed Conditions

EPA ATTAINS

Under the Clean Water Act §303(d), EPA ATTAINS tracks whether waterways meet quality standards for drinking, recreation, and aquatic life (reporting cycle: 2022). A substantial 36.5% of assessed waterways are impaired (129 of 353 water bodies) across Camas County's watersheds. The leading impairment causes are phosphorus, total and temperature. Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T12:45:00.000-06:00) puts CAMAS CREEK at 12.7 cfs — well below its long-term average at 8% of mean — low-flow conditions worth noting for water-dependent ecosystems. Streamflow is a leading indicator of drought stress, sediment load, and dilution capacity: low flows concentrate pollutants and warm water temperatures, stressing aquatic life and, in surface-water-dependent systems, the source water quality for treatment plants.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Camas County has moderate coverage with 31 active monitoring sites with 5,148 recent measurements on record. Predominant monitoring categories include biological, counts and physical. More monitoring sites generally indicate greater scientific attention to local water conditions — and provide the baseline data that regulators use to set future impairment listings.

Editorial advisory

What the data suggests for Camas County

Water Verdict

Camas County, Idaho receives a poor water quality assessment with a grade of F and a score of 13.4 out of 100. The water supply has documented quality issues. Residents are strongly encouraged to use filtered or bottled water for drinking and to stay informed about utility improvement plans. Separately, EPA ATTAINS assessments cover 353 water bodies in the county's watershed, with 36.5% listed as impaired under the Clean Water Act — a source-water measure that is tracked independently of tap-water compliance. At the most recent USGS reading, local streamflow was below its historical mean at 8.2% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for Camas County, Idaho show 1 health-based violation, meaning a water system experienced at least one exceedance of federal contaminant limits or treatment requirements. At 226.8 violations per 100,000 people served, this rate is high and signals significant water quality management issues. For independent context, 5,148 water-quality monitoring results have been recorded across the county in the EPA Water Quality Portal over the past five years.

Consumer Guidance

Drinking-water compliance in Camas County is rated Grade F, reflecting significant health-based violations in the recent reporting period. Camas County's drinking-water compliance score is 13.4 out of 100. An NSF 53 or NSF 58-certified filter is recommended for drinking and cooking water. Check the Consumer Confidence Report from your utility to identify the specific contaminants and required corrective actions — utilities are legally required to notify customers of violations. Phosphorus, Total is the leading impairment cause in Camas County's watershed. With 31 active water-quality monitoring sites in Camas County, data coverage is strong. A pipeline streamflow snapshot from the CAMAS CREEK gauge is also available on this page.

Regional Context

Camas County has poorer water quality than the average county in Idaho. Its water score is 19.2 points lower than the state average, suggesting more challenges with contamination control or infrastructure than neighboring counties.

Advisory text summarizes county-level public records and is not a replacement for your utility's current Consumer Confidence Report or direct local notices.

Contaminants & Resources

Key issues flagged in Camas County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Phosphorus (excess nutrients)

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 2

    Elevated temperature

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 3

    Sedimentation and siltation

    Impairment cause per EPA Clean Water Act §303(d) assessment

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Camas County

EPA How's My Waterway

Interactive watershed health data for Camas County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Camas County

Consumer Confidence Reports (ID)

Annual water quality reports from utilities in Idaho

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

36.5%

129 of 353 assessed

Moderate concern

Top Impairment Causes

  • 1

    PHOSPHORUS, TOTAL

  • 2

    TEMPERATURE

  • 3

    SEDIMENTATION/SILTATION

Source: EPA ATTAINS · Reporting cycle 2022

Impairment is determined under the Clean Water Act §303(d): a water body is impaired when it fails to meet state-defined quality standards for designated uses (drinking, recreation, aquatic life). Assessment coverage varies by state; counties without assessed water bodies are not shown.

Past 5 years

Water Quality Monitoring

Monitoring Sites

31

Active in the past 5 years

Measurements Recorded

5.1K

5,148 total readings

Most Measured

  • Biological, Counts
  • Physical
  • Biological, Fish

Categories measured most frequently

Data from the EPA Water Quality Portal (WQP), aggregating monitoring records from federal, state, and tribal sources. Each measurement represents a single sample analyzed for a specific characteristic (e.g., E. coli, pH, dissolved oxygen, nitrogen).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

12.7cfs

May 14, 6:45 PM UTC

vs Long-Term Average

8%

Well below typical

Primary Streamgage

CAMAS CREEK NR BLAINE ID

USGS site
13141500
Drainage area
626 sq mi
Long-term mean
154 cfs

One representative streamgage (the one with the largest drainage area in the county). Many counties have multiple gauges; this view summarizes the primary one. The long-term mean is the full-record annual average; the percent-of-typical value compares the latest reading against that average.

Free tool

Estimate Your Water Costs

Water Cost Estimate

3

3 people  ·  ~225 gal/day

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Camas County:C — Moderate

Some violations or watershed impairment detected.

Estimates use the national average residential water rate ($0.0068/gal, EPA/AWWA 2023) and EPA WaterSense per-person consumption baseline (75 gal/person/day). Actual bills vary by utility, usage tier, and local infrastructure fees. For informational purposes only.

Try the full calculator →

Improve your water quality at home

Berkey filters remove 99.9%+ of contaminants from tap water.

Shop Berkey →

Sponsored

Test your tap water

Tap Score provides professional mail-in water testing.

Get Tested →

Frequently Asked Questions

What is the water quality in Camas County, Idaho?
Camas County, Idaho has a drinking-water quality grade of F with a score of 13.4/100, based on EPA SDWIS compliance data. The county has 1 health-based drinking water violation over the past 5 years. Watershed health, monitoring records, and streamflow snapshots are reported separately on this page.
Are there any water violations in Camas County?
Camas County has 1 health-based drinking water violation recorded by the EPA over the past 5 years. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How healthy are the watersheds in Camas County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 36.5% of Camas County's 353 assessed water bodies are classified as impaired (129 impaired). The top reported causes are PHOSPHORUS, TOTAL, TEMPERATURE, SEDIMENTATION/SILTATION. Impairment means the water body fails to meet state quality standards for at least one designated use — drinking water source, recreation, aquatic life, or fish consumption. Note: watershed impairment doesn't always translate to tap-water issues; treatment plants can remove most regulated contaminants.
How much water-quality monitoring happens in Camas County?
EPA's Water Quality Portal records 5,148 measurements from 31 monitoring sites in Camas County over the past five years. The most frequently measured characteristic groups are Biological, Counts, Physical, Biological, Fish. Each measurement is a single sample analyzed for one characteristic (E. coli, pH, dissolved oxygen, etc.). High monitoring density means more scientific evidence behind any reported signal — it does not by itself indicate water quality.
What's happening with rivers in Camas County right now?
Camas County's primary USGS streamgage on the CAMAS CREEK has a pipeline snapshot of 12.7 cubic feet per second — 8% of the long-term mean of 154.45 cfs. This is well below typical — often a signal of drought stress on source water. For the latest gauge feed, visit waterdata.usgs.gov.
How does Camas County water compare to the Idaho average?
Camas County's SDWIS water quality score of 13.4/100 is lower than the Idaho state average of 32.6. The average water quality grade across Idaho is F, based on data from 44 counties with available SDWIS data.
Is tap water safe to drink in Camas County?
Based on EPA SDWIS data, Camas County has a water quality grade of F (13.4/100). This indicates below-average compliance with significant violations. Residents may want to consider home water filtration or independent testing. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Does Camas County have clean drinking water?
Camas County has 1 health-based drinking water violation according to EPA records. With a water quality score of 13.4/100 and grade F, the county's drinking water has had some compliance issues but continues to be monitored. Note: drinking-water compliance speaks to the public water system, not necessarily to the watershed itself — check the Watershed Health zone for ATTAINS §303(d) data.
How does Camas County rank for water quality in Idaho?
Camas County ranks #34 out of 44 counties in Idaho by SDWIS water quality score (1 = best). With a score of 13.4/100, it falls in the bottom third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.

Counties with Similar Water Quality

Power County

Idaho

F

12.2

Water score

Elmore County

Idaho

F

14.8

Water score

Cassia County

Idaho

F

15.9

Water score

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Watershed health and impaired-waterway data from the EPA ATTAINS Clean Water Act §303(d) assessments, state-reported and EPA-finalized.

Water-quality monitoring counts from the EPA Water Quality Portal (WQP), federated USGS, EPA, and state agency sampling records over a rolling 5-year window.

Live streamflow from the USGS National Water Information System (NWIS), continuous discharge measurements from the largest-drainage gauge in each county, compared against the full-record long-term annual mean.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

Explore more data for Camas County

Property TaxCost of LivingCrime RateIncomeHealthSchoolsDisaster RiskWeatherCounty Score